Unsane trailer: Steven Soderbergh's iPhone shot movie looks terrifying

Starring The Crown's Claire Foy

Steven Soderbergh's non-retirement started with a bang, last year’s Adam Driver, Channing Tatum, and Daniel Crag-starring movie Logan Lucky making for truly excellent viewing.

Less than 12 months later and the world has been offered a trailer for the director’s next flick, Unsane, featuring Claire Foy and shot entirely on an iPhone.

Based on a screenplay by Jonathan Bernstein and James Greer, Unsane reaches cinemas 23 March. Watch the trailer above and read the official synopses from FOX below.

UNSANE is directed by Academy Award-nominated director Steven Soderbergh (Logan Lucky, Erin Brockovich), stars Claire Foy (The Crown), Joshua Leonard (The Blair Witch Project), Jay Pharoah (Ride Along), Juno Temple (Atonement), Aimee Mullins (Stranger Things) and Amy Irving (Traffic).

A young woman leaves her hometown to escape a troubled past and begin a new job. But when she is involuntarily committed to a mental institution she is confronted by her greatest fear — but is it real or just her delusion?

With seemingly no-one ready to believe her and the authorities unable or unwilling to help, she must confront her fears head on. With twisting perspectives and a shocking narrative, Unsane asks questions about our perception of reality, our survival instinct and the system that is supposed to take care of us.